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Paint stripping resin

PostPosted: Thu Mar 08, 2012 10:18 pm
by smtk
Hello

I have an old armorcast resin model that I wish to paint strip. It was originally paint with car spray paint and GW acrylics.

So far I have short list the following from googling chemicals to remove paint;
Simple green = Bought item dunked acrylic came off / car paint rubbing off a little but not much
Caustic soda (or strong oven cleaner) = Not tried
Dot 4 brake fluid = Not tried, pita to get rid off

Before i go buy the last 2 any of you have any super tips for budging old (car) paint with out melding the resin?

Re: Paint stripping resin

PostPosted: Fri Mar 09, 2012 7:10 am
by mangozac
Don't use methylated spirits (what I've generally used for metal models, purely because I have it on hand)- it softens the resin (although the resin does eventually re-harden, handling the softened resin damages it).

The enamel car paint is going to be hard to remove. Do you really need to if you've got the acrylic coats off?

Re: Paint stripping resin

PostPosted: Fri Mar 09, 2012 8:00 am
by smtk
mangozac wrote:The enamel car paint is going to be hard to remove. Do you really need to if you've got the acrylic coats off?


Ideally yes. Its hard to see how much over spray is on the model. Fool is me for using car paint (doh!)

My test piece Has been sat in simple green for 30hrs now and the car paint has started to soften with not ill effects to the resin. So I've dumped the rest in to a big tub simple green and I'll leave it a week going back every day to agitate the surface with a bristle brush.

I tired out caustic soda too didn't hurt the resin and seem to make the car paint go brittle and could be chipped off after a few hours. On balance I'm not in a hurry to get the model stripped and don't fancy having 2 litres of caustic soda sitting in my office so I went with the simple green option (results in next week :| )

Re: Paint stripping resin

PostPosted: Sun Mar 18, 2012 10:09 am
by smtk
so the results are the simple green works on car paint and doesn't hurt the resin.

But does require allot of scrubbing. Places where the over spray is heavy needed scraping to allow the simple green to work. I also bought some dental picks to scrap out the recesses where my brush couldn't reach.

Re: Paint stripping resin

PostPosted: Sun Mar 18, 2012 1:20 pm
by mangozac
Thanks for the update - good to know that Simple Green really is the ultimate solution (unlness you're in a hurry) ;)

Re: Paint stripping resin

PostPosted: Sun Mar 18, 2012 3:24 pm
by Vaaish
I think your primer is an exception though Zac. I soaked that SC you'd hit with it in concentrated Simple Green for a few days and didn't have much luck getting it off. Finally just primed over it.

Re: Paint stripping resin

PostPosted: Sun Mar 18, 2012 3:35 pm
by mangozac
Oh yeah? That's interesting. I used Tamiya Surfacer Primer, which is one of the best primers I've used. In fact I've found that it leaves the much loved Mr Surfacer for dead! If only Tamiya offered it in a pot rather than expensive rattle can (so that it can be economically airbrush applied)...

Oh and I'm sorry about that. I hope the extra layer hasn't softened any details :oops:

Re: Paint stripping resin

PostPosted: Mon Mar 19, 2012 12:13 am
by Vaaish
Nah, no detail lost. If I ever manage to get finished painting them I'll post the pics. They've been on my table since the beginning of the month and I've only got 1 of 5 through the first round of high lights to the hull color.

Re: Paint stripping resin

PostPosted: Fri Jun 29, 2012 7:33 pm
by Novista
If you're in the U.K. straight up Dettol (plus you can slip it on the shopping list and get it in under the radar :) ), simple green is a nightmare to get hold of over here, unless you wanna fork out loads on P&P.

Dettol is the dogs, between 1-3 days covered and in a jam jar and you'll see the paint start to lift off. Toothbrush and washing up liquid off that which doesn't just lift off.

Re: Paint stripping resin

PostPosted: Fri Jun 29, 2012 9:29 pm
by Fleafa
Fairy Power Spray is meant to be amazing. Just a few minutes soak!
Not tried it yet myself but will buy as soon as I see it :)

Re: Paint stripping resin

PostPosted: Fri Jun 29, 2012 9:31 pm
by smtk
noted I'll probably try them out at some stage :)

simple green is sold in the UK but its expensive esp if dettol does the same thing

Re: Paint stripping resin

PostPosted: Mon Jul 02, 2012 9:49 pm
by Novista
Fleafa wrote:Fairy Power Spray is meant to be amazing. Just a few minutes soak!
Not tried it yet myself but will buy as soon as I see it :)


With any luck Asda'll still have for it £2 next week, tescos is on offer til tomorrow £2.50 (shopping on thursday! :( ), i need to strip a few bits for headswops, so i'll give it a go.

Re: Paint stripping resin

PostPosted: Thu Jul 05, 2012 8:26 am
by Fleafa
Bought some Fairy Power Spray today and it is incredible! Starts working instantly but needs about 20mins to do the job. I just sprayed the (plastic) model and left it for a while. Came back and cleaned it with some carry-case foam (I was in the middle of a game!) and all the paint bar that in the deep recesses came right off. For £2.50 at Tesco (ugh, I hate that I gave them my money) I consider it a huge win.

Re: Paint stripping resin

PostPosted: Fri Jul 06, 2012 12:16 am
by Arkangel
Thats awesome. So it's good for Plastics and Reisn?
This could be my new favourite product.

Re: Paint stripping resin

PostPosted: Fri Jul 06, 2012 7:46 am
by Fleafa
Tested it on a second hand Barracuda and it seems to leave resin alone :)

Update:
Image
Took a bit of work on this one, but take a look at how many layers of paint were on it:
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